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GuiTextBox(): Support Unicode inputs #99

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raysan5
2020-07-13 19:53:17 +02:00
parent 6d2d6819fa
commit 95b225b90c
1 changed files with 47 additions and 6 deletions
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53
src/raygui.h
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@ -1414,7 +1414,7 @@ bool GuiTextBox(Rectangle bounds, char *text, int textSize, bool editMode)
state = GUI_STATE_PRESSED; state = GUI_STATE_PRESSED;
framesCounter++; framesCounter++;
int key = GetKeyPressed(); int key = GetKeyPressed(); // Returns codepoint as Unicode
int keyCount = strlen(text); int keyCount = strlen(text);
// Only allow keys in range [32..125] // Only allow keys in range [32..125]
@ -1422,15 +1422,18 @@ bool GuiTextBox(Rectangle bounds, char *text, int textSize, bool editMode)
{ {
int maxWidth = (bounds.width - (GuiGetStyle(TEXTBOX, TEXT_INNER_PADDING)*2)); int maxWidth = (bounds.width - (GuiGetStyle(TEXTBOX, TEXT_INNER_PADDING)*2));
if (GetTextWidth(text) < (maxWidth - GuiGetStyle(DEFAULT, TEXT_SIZE))) if ((GetTextWidth(text) < (maxWidth - GuiGetStyle(DEFAULT, TEXT_SIZE))) && (key >= 32))
{ {
if (((key >= 32) && (key <= 125)) || int byteLength = 0;
((key >= 128) && (key < 255))) const char *textUtf8 = CodepointToUtf8(key, &byteLength);
for (int i = 0; i < byteLength; i++)
{ {
text[keyCount] = (char)key; text[keyCount] = textUtf8[i];
keyCount++; keyCount++;
text[keyCount] = '\0';
} }
text[keyCount] = '\0';
} }
} }
@ -3672,6 +3675,44 @@ static int TextToInteger(const char *text)
return value*sign; return value*sign;
} }
// Encode codepoint into utf8 text (char array length returned as parameter)
static const char *CodepointToUtf8(int codepoint, int *byteLength)
{
static char utf8[6] = { 0 };
int length = 0;
if (codepoint <= 0x7f)
{
utf8[0] = (char)codepoint;
length = 1;
}
else if (codepoint <= 0x7ff)
{
utf8[0] = (char)(((codepoint >> 6) & 0x1f) | 0xc0);
utf8[1] = (char)((codepoint & 0x3f) | 0x80);
length = 2;
}
else if (codepoint <= 0xffff)
{
utf8[0] = (char)(((codepoint >> 12) & 0x0f) | 0xe0);
utf8[1] = (char)(((codepoint >> 6) & 0x3f) | 0x80);
utf8[2] = (char)((codepoint & 0x3f) | 0x80);
length = 3;
}
else if (codepoint <= 0x10ffff)
{
utf8[0] = (char)(((codepoint >> 18) & 0x07) | 0xf0);
utf8[1] = (char)(((codepoint >> 12) & 0x3f) | 0x80);
utf8[2] = (char)(((codepoint >> 6) & 0x3f) | 0x80);
utf8[3] = (char)((codepoint & 0x3f) | 0x80);
length = 4;
}
*byteLength = length;
return utf8;
}
#endif // RAYGUI_STANDALONE #endif // RAYGUI_STANDALONE
#endif // RAYGUI_IMPLEMENTATION #endif // RAYGUI_IMPLEMENTATION